BUY 3SH21 https://www.utsource.net/itm/p/4059701.html

Manufacturer: Sharp Description: Photocoupler IC Features: - Isolation voltage: 5000 Vrms - Input-output isolation voltage: 5000 Vrms - Input-output isolation capacitance: 0.2 pF - Operating temperature range: -40°C to 85°C - Low input current: 1.6 mA - Low output saturation voltage: 0.4 V - High noise immunity: 10 kV/μs Applications: - Used in industrial equipment - Used in home appliances - Used in communication equipment - Used in automotive systems (For reference only)